Pressure-governor.



Naf 7|7,|2'2..f` Patented nec. 30,' |902. Y A. RoEscH.

PRESSURE GOVERNOR.

(Application filed Jan. 2, 1902.)

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BY I ff s 0 l ATTORNEY 'No. 7I7,I22. v Patented Dec. 30,v |902.

A. HOESCH. 4

PRESSURE GOVERNOR.

.'Applicatlon med Jan. 2, 1902.) (No Model.) 2 Sheets-Sheet 2.

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lINTTnn STATES PATENT OFFICE.

ALFRED ROESCH, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO DAVIS da Y, OFNEW YORK, N. Y.,

PRESSURE-GOVERNOR.

SPECIFICATION forming part of Letters Patent N 0. 717,122, datedDecember 30, 1902.

Application filed January 2, 1902. Serial No. 88,034. (No model.)

To LZZ whom, it may concern:

Be it known that I, ALFRED ROESCH, a citi- Zen of the United States ofAmerica, and a resident of Bridgeport, in the county of Fairtield andState of Connecticut, have invented certain new and useful Improvementsin Pressure-Governors, of which the following is a specification,reference being had to the accom panying drawings, forminga partthereof. 1o My invention relates to improvements in pressure governorsor regulators, and particularly to that class of governors or regulatorsin which variation in pressure will itself operate to automaticallycontrol the means by which said pressure may be regulated, suchgovernors or regulators being used in connection with heating systems,reducing-valves, and the like. In the present form of my invention suchmeans comprises a damper arzo ranged in a flue rising from a heater andan operating means for moving the damper, consisting of aluid-pressure-operated motor and valve mechanism for controlling themotive fluid therefor. The present invention is com- 2 5 prisedprincipallyin the valve mechanism and in the coacting parts. Thevalve-chamber is provided with an inlet-port and a distributing-port,and an inlet-valve is iitted thereto for controlling communicationbetween said 3o inlet-port and said distributing-port, and adischarge-valve is also provided for controlling the discharge from saiddistributingport. Both the said valves and their stems are containedwholly within the valve-chamber, and the said valves are operated fromthe discharge side of the discharge-valve by a rod which is arrangedbetween the said discharge-valve and the movable wall of apressure-chamber. By said arrangement the use 4o of a stuffing-box` oranalogous device becomes unnecessary, and the operating-rod of thepressure-chamber is permitted an entirely unobstructed movement.

I have provided a means for preventing the escape of iuid from thevalve-chamber at the point at which the operating-rod of thepressure-chamber penetrates same for the purpose of engaging the valves.Such means herein comprises an uprising-tube which surrounds the rod atand above the said point 5o of penetration and an annularliquid-deflector secured to the rod at a point above the said tube.Liquid discharged through the discharge-valve will be deliected by thesaid deflector and will be carried away through a suitabledischarge-pipe provided, and escape from the valve-chamber exceptthrough such discharge-pipe will be prevented.

The main object of my invention is to increase the sensitiveness ofpressure govern- 6o ors or regulators of this description by dispensingwith stuffing-boxes or other devices which involve frictional contactupon the operating-rod.

Further objects of myinvention are to simplify the parts and toreduce-the cost of construction and. maintenance of a device of thisdescription.

My invention further consists in certain details of construction andcombination of parts, 7o as shall hereinafter be more fully set forth,and other advantages will appear hereinafter.

I will now proceed to describe a pressure governor or regulatorembodying my invention and will then point out the novel features inclaims.

Vith reference to the drawings, Figure l is an elevation in centralvertical section of a governor or regulatorembodying my invention. Fig.2 is a side elevation of the same, 8o a portion of the frame beingbroken away in order to disclose other parts. Fig. 3 is an enlargeddetail section of a portion of the valvechamber and a portion of theinlet and discharge valves therein. Fig. tis a diagram- 85 matic viewillustrating a system in which my regulator or governor may be employed.

The governor or regulator herein illustrated as an embodiment of myinvention comprises three sections united togethera 9o lower section l,which includes the pressurechamber, an upper section 2, which comprisesthe valve-chamber, and an intermediate section 8, which connects thesections l and 2 together.

The section 1 comprises a base 4, having a chamber 5 therein, which isinclosed by diaphragm 6. A ring 7 is secured to the base 4:,

'of the intermediate section 3.

The section 2 is made up of two separate members 10 and 11. This,however, is merely for conveniencelof manufacture, and for the purposesof this speciiication they may be considered as being all one part. Themember 10 has an inlet port or passage 12 and a distributing port orpassage 13. An inletvalve 14 is fitted to the chamber between theinlet-port and the distributing-port, and a discharge-valve 15 is iittedto the chamber upon the opposite side of the distributing-port andcontrols the discharge. The valve 15 discharges into a chamber 16,formed in the member 11, from which a port or passage 17 leads toexhaust.

An operating-rod 13, provided at its lower end with a follower 19, isarranged between the diaphragm 6 of the pressure-chamber and thedischarge side of the discharge-valve 15. The follower and the diaphragm6 constitute the movable wall of the pressurechamber. The operating-rodpenetrates the valve-chamber through the lower wall of the lower member11 thereof, and a tube 20, fitted to the chamber and projecting upwardlywithin same, surrounds the said rod at or above the point at which thesaid rod enters the chamber. The operating-rod is further provided witha liquid-deflector 21, which is secured thereto at a point above thesaid tube.

A spring 22 is arranged between the movable wall of the pressure chamberand a stationary part of the, device, and, as herein shown, the saidspring surrounds the lower end of the operating-rod and at one end bearsagainst the follower 19 and at the other against an adjusting-nut 23. Bymanipulation of the adjusting-nut 23 the tension of the spring may beadjusted as may be desired, and the governor or regulator may hence becaused to operate at the desired point of {luid-pressure -within thepressure-chamber. A light coil-spring 24 is arranged between the upperend of the inlet-valve 14 and a cap 25, with which the upper end of thevalve-chamber is closed, the said springs tending normally to seat thevalve 14. The inner ends of the valves 14 and 15 are in contact witheach other, and I have provided an adjusting-screw 26, in screw-threadedengagement with one of said valves and bearing against the other, inorder to adjust the amount of opening possible for either of the saidvalves. The adjustingscrew 26 will be so adjusted that when either oneof the valves is closed the other valve will always be open. In theposition in which the parts are illustrated herein the inletvalve 14 isclosed, and consequently the discharge-valve 15 is opened. When pressurerises in the pressurechamber 5, so as to further overcome the tension ofthe spring 22, the discharge-valve l5 will be closed, while theinlet-,valve 14 will be opened. When this takes place, liquid underpressure, which enters through the port or passage 12, will be permittedto pass to the distributing-port 13.

Referring now to Fig. 4 and which shows one form of apparatus with whichmy invention is adapted to be employed, it will be seen that thedistributing port or passage 13 may lead to a motor 2 7, such motorcontrolling the Vposition of a damper 28, arranged in the uptake 29 ot'a heater 30. A connection 31 is shown which may connect the fluid underpressure in the heater 30 with the pressurechamber 5 of the governor orregulator. The liquid under pressure iiowing through the port or passage12 and the port or passage 13 to the motor 27 will operate the saidmotor so as to change the position of the damper 28. Upon a reduction ofpressure in the pressurechamber 5 the spring 22 will lower theoperating-rod 1S and permit the inlet-valve 14 to close underthe-tension of the coil-spring 24. This will open the discharge-valve15, and the liquid from the motor 27 will be returned through thedistributing port or passage 13 to the valve-chamber anddischargedthrough the valve 15 into chamber 16 and out through the discharge orexhaust 17. The deflector 21 and the tube 20 will prevent the escape ofiiuid from the valve-chamber except through the discharge 17. By thisarrangement of inlet and discharge valves and by the provision of themeans for preventing the escape of liquid from the valve chamber exceptthrough the discharge 17 without friction or contact with the sides ofthe rod an eXtreme delicacy of operation is attained. It is understoodthat the rod 18 passes freely through the nut 23 without bearing againstit at any It will be understood, of course, that I do not want to belimited to the precise construction or combination of parts hereinshown, as the same may be varied within wide limits without departingfrom the spirit or scope of my invention, and it will furthernbeunderstood that the application of the regulator or governor asillustrated in Fig. 4 is but one of the many uses to which my inventionmay be applied.

What I claim is- 1. In a regulator, the combination with a valve-chamberhaving an exhaust-port, and a valve in said chamber for permitting orpreventing discharge to said exhaust-port, of an operating rod arrangedwith one portion thereof within said Valve-chamber, and another portionthereof without same, said rod located beneath the said valve andengaging same, means located without said valve-chamber for operatingsaid rod, and an annular liquid-deflector carried by said rod withinsaid valve-chamber,the exhaust-port in said valvechamber located at apoint below the level at which liquid would discharge through theopening through which the said rod penetrates the valve-chamber, and theliquid-de- ICO IIO

ector arranged to deflect exhaust liquid away from the said opening,toward the exhaustport.

2. In a regulator, the combination with a valve-chamberhavinganexhaust-port, and a valve in vsaid chamber for permitting or preventingdischarge to said exhaust-port, of an operatingrod arranged with oneportion thereof within said valve-chamber and another portion thereofwithout'same, the said rod engaging said valve, a tube surrounding saidrod, and secured Within said valve-chainber to the bottom thereof, andextending upwardly to a point above the point of exhaust from saidchamber, means located without the valve-chamber for operating the saidrod, and an annular liquid-deflector secured to said rod above saidtube, and adapted to deflect exhaust fluid into the annular space formedby the tube and the valve-casing.

3. In a regulator, the combination with a pressure-chamber having amovable wall, of a valve-chamber having an exhaust-port, and a valve insaid chamber for permitting or preventing discharge to saidexhaust-port, a rod arranged with one portion thereof within the saidvalve-chamber, and another portion thereof without same, said rodlocated beneath the said 'Valve and engaging same and said movable wall,means located without said valve-chamber for operating said rod, and anannular liquid-deflector carried by said rod within said valve-chamber,the exhaust-port in said valvechamber located at a point below the levelat which liquid would discharge through the opening through which thesaid rod penetrates the said valve-chamber, and the liquid-defiectorarranged to defleet exhaust fluid away from the said opening, towardsaid exhaust-port.

4. In a regulator, the combination with a pressure-chamber having amovable wall, of a valve-chamber having an exhaust-port, and a valve insaid chamber for permitting or preventing discharge to saidexhaust-port, a rod arranged with one portion thereof within the saidvalve-chamber, and another portion thereof;` Without same, said rodengaging said valve and said movable wall, a tube surrounding said rod,and secured Within said valvechainber to the bottom thereof, andextending upwardly to a point above the point of exhaust from saidchamber, and an annular liquid-deector secured to said rod above saidtube, and adapted to defiect exhaust liuid into the annular space formedby the tube and the valve-casing.

5. In a regulator, the combination with a valve-casing having twovalve-seats, of two oppositely-opening valves fitted to said casing toengage said seats and arranged inline with each other, and an adjustablescrew, 'fitted to one valve and engaging the other, substantially as andfor the purpose set forth.

' ALFRED HOESCH.

Vitnesses:

A. H. PERLES, C. F. CARRINGTON.

